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What is the nth term if the qudratic sequence is: 6,12,20,30,42?

User Dgebert
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2 Answers

9 votes
the answer is a9=110
User Paddy Popeye
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9 votes

Answer:

The quadratic sequence is
x^2+3x+2.

Explanation:

There are multiple methods of finding this but the easiest is by using Quadratic Regression on your calculator. If you are unable to do that, then you can create a system of equations with three points to find the value of the three coefficients.

User Shimizu
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